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The Fire Coral, also referred to as the Box or Stinging Coral, is often mistaken for a small polyp stony (SPS) coral because of its hard yellow exoskeleton. In fact, it is classified as a Hydrocoral and closely related to jellyfish. Its body is made up of calcium carbonate, and its beautiful fan-shaped branches are very fragile. In the wild, Fire Coral has a reputation for inflicting a painful sting on unsuspecting divers. It will also do the same in the reef aquarium, so use caution when handling.
The Fire Coral is highly adaptable, a hardy species, and aggressive towards other corals in the reef aquarium. Provide adequate space between it and other corals within the reef system. The Fire Coral prefers a high light level and strong water current within the aquarium, along with the addition of calcium, iodine, strontium, and other trace elements to the water.
It contains the symbiotic algae zooxanthellae which provide much of its nutritional requirements through photosynthesis. It will eagerly eat and benefit from supplemental foods such as micro-plankton offered on a weekly basis."